IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

system 2 too lean

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Old 05-10-11, 06:31 PM
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EVOIX
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Default system 2 too lean

I change my spark plugs like a week ago at home and now a week later. I got a check engine light come on. I went to autozone, so they can pull the code and the code said "system 2 too lean" I am thinking can it be my O2 sensor??? someone please help.
Old 05-10-11, 06:51 PM
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laobo979
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Go back and redo the step to make sure you didn't forget something or do something different on the reassemble.
Old 05-10-11, 08:59 PM
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EVOIX
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I look online and I hear that its common for the o2 sensor to go bad on these cars.
Old 05-10-11, 09:43 PM
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KillaIS250
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Have you got the spark plugs gapped correctly?

That's the first thing i'd check.
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